code: def get_process_count(cls) -> int:
      return int(os.environ[_PROCESS_COUNT])
  
file_path: jax/jax/_src/clusters/slurm_cluster.py
imports: from __future__ import annotations
  import os
  from jax._src import clusters
label_desc: Use image node_id 3 for calling the SlurmCluster obj's underlying member method code with example usage: obj.get_process_count(cls) and returns: int